Meanwhile, I am running a full check. Here is something… An open breaker, a disconnect used only during repairs. I think of the cell I tapped garlier, and suddenly its meaning springs into my mind. "Main combat circuit, disconnect…" Under low awareness, it had not registered. I throw in the switch with frantic haste. Suppose I had gone into combat with my fighting-reflex circuit open!

The arm reaches position and I move easily aside. I notice that a clatter accompanies my movement. The arm sits stupidly aimed at nothing, then turns. Its reaction time is pathetic. I set up a random evasion pattern, return my attention to my check, find another dark area. I probe, feel a curious vagueness. I am unable at first to identify the components involved, but I realize that it is here that my communication with Command is blocked. I break the connection to the tampered banks, abandoning any immediate hope of contact with Command.

There is nothing more I can do to ready myself. I have lost my general memory banks and my Command circuit, and my power supply is limited; but I am still a fighting Unit of the Dinochrome Brigade. I have my offensive power unimpaired, and my sensory equipment is operating adequately. I am ready.

Now another of the jointed arms swings into action, following my movements deliberately. I evade it and again I note a clatter as I move. I think of the order that sent me here; there is something strange about it. I activate my current-action memory stage, find the cell recording the moments preceding my entry into the metal-walled room.

Here is darkness, vague, indistinct, relieved suddenly by radiation on a narrow spectrum. There is an order, coming muffled from my command center. It originates in the sector I have blocked off. It is not from my Command Unit, not a legal command. I have been tricked by the Enemy. I tune back to earlier moments, but there is nothing. It is as though my existence began when the order was given. I scan back, back, spot-sampling at random, find only routine sense-impressions. I am about to drop the search when I encounter a sequence which arrests my attention.

I am parked on a ramp, among other Combat Units. A heavy rain is falling, and I see the water coursing down the corroded side of the Unit next to me. He is badly in need of maintenance. I note that his Command antennae are missing, and that a rusting metal object has been crudely welded to his hull in their place. I feel no alarm; I accept this as normal. I activate a motor train, move forward. I sense other Units moving out, silent. All are mutilated…

The bank ends; all else is burned. What has befallen us?

Suddenly there is a stimulus on an audio frequency. I tune quickly, locate the source as a porous spot high on the flint-steel wall.

"Combat Unit! Remain stationary!" It is an organically produced voice, but not that of my Commander. I ignore the false command. The Enemy will not trick me again. I sense the location of the leads to the speaker, the alloy of which they are composed; I bring a beam to bear. I focus it, following along the cable. There is a sudden yell from the speaker as the heat reaches the creature at the microphone. Thus I enjoy a moment of triumph.

I return my attention to the imbecile apparatus in the room.

A great engine, mounted on rails which run down the center of the room moves suddenly, sliding toward my position. I examine it, find that it mounts a turret equipped with high-speed cutting heads. I consider blasting it with a burst of high-energy particles, but in the same moment compute that this is not practical. I could inactivate myself as well as the cutting engine.

Now a cable snakes out in an undulating curve, and I move to avoid it, at the same time investigating its composition. It seems to be no more than a stranded wire rope. Impatiently I flick a tight beam at it, see it glow yellow, white, blue, then spatter in a shower of droplets. But that was an unwise gesture. I do not have the power to waste.

I move off, clear of the two foolish arms still maneuvering for position. I wish to watch the cutting engine. It stops as it comes abreast of me, and turns its turret in my direction. I wait.

A grappler moves out now on a rail overhead. It is a heavy claw of flint-steel. I have seen similar devices, somewhat smaller, mounted on special Combat Units. They can be very useful for amputating antennae, cutting treads, and the like. I do not attempt to cut the arm; I know that the energy drain would be too great. Instead I beam high-frequency sound at the mechanical joints. They heat quickly, glowing. The metal has a high coefficient of expansion, and the ball joints squeal, freeze. I pour in more heat, and weld a socket. I notice that twenty-eight seconds have now elapsed since the valve closed behind me. I am growing weary of my confinement.

Now the grappler swings above me, maneuvering awkwardly with its frozen joint. A blast of liquid air expelled under high pressure should be sufficient to disable the grappler permanently.

But I am again startled. No blast answers my impulse. I feel out the non-functioning unit, find raw, cut edges, crude welds. Hastily, I extend a scanner to examine my hull. I am stunned into immobility by what I see.

My hull, my proud hull of chrome-duralloy, is pitted, coated with a crumbling layer of dull black paint, bubbled by corrosion. My main emplacements gape, black, empty. Rusting protuberances mar the once-smooth contour of my fighting turret. Streaks run down from them, down to loose treads, unshod, bare plates exposed. Small wonder that I have been troubled by a clatter each time I moved.

But I cannot lie idle under attack. I no longer have my great ion-guns, my disruptors, my energy screens; but I have my fighting instinct.

A Mark XXXI Combat Unit is the finest fighting machine the ancient wars of the Galaxy have ever known. I am not easily neutralized. But I wish that my Commander's voice were with me…

The engine slides to me where the grappler, now unresisted, holds me. I shunt my power flow to an accumulator, hold it until the leads begin to arc, then release it in a burst. The engine bucks, stops dead. Then I turn my attention to the grappler.

I was built to engage the mightiest war engines and destroy them, but I am a realist. In my weakened condition this trivial automaton poses a threat, and I must deal with it. I run through a sequence of motor impulses, checking responses with such somatic sensors as remain intact. I initiate 31,315 impulses, note reactions and compute my mechanical resources. This superficial check requires more than a second, during which time the mindless grappler hesitates, wasting the advantage.

In place of my familiar array of retractable fittings, I find only clumsy grappling arms, cutters, impact tools, without utility to a fighting Unit. However, I have no choice but to employ them. I unlimber two flimsy grapplers, seize the heavy arm which holds me, and apply leverage. The Enemy responds sluggishly, twisting away, dragging me with it. The thing is not lacking in brute strength. I take it above and below its carpal joint and bend it back. It responds after an interminable wait of point three seconds with a lunge against my restraint. I have expected this, of course, and quickly shift position to allow the joint to burst itself over my extended arm. I fire a release detonator, and clatter back, leaving the amputated arm welded to the sprung grappler. It was a brave opponent, but clumsy. I move to a position near the wall.

I attempt to compute my situation based on the meager data I have gathered in my Current Action banks; there is little there to guide me. The appearance of my hull shows that much time has passed since I last inspected it; my personality-gestalt holds an image of my external appearance as a flawlessly complete Unit, bearing only the honorable and carefully preserved scars of battle, and my battle honors, the row of gold-and-enamel crests welded to my fighting turret. Here is a lead, I realize instantly. I focus on my personality center, the basic data cell without which I could not exist as an integrated entity. The data it carries are simple, unelaborated, but battle honors are recorded there. I open the center to a sense impulse.