War! The Industrial Revolution.
The sun rises over a nameless valley to reveal a battlefield strewn with wreckage, rubble and twisted piles of metal still burning from last nights battle. Explosions and cries of help ring out from the field competing for attention. The Galactic Republic has been fighting the Separatists for days trying to restore freedom to a small city under siege, but all hope seems lost. 
A single machine appears seemingly out of nowhere trudging along as it walks past its fallen mechanical brethren, giving a groan and a hiss as if to grieve. Of all the AT–TE's, the one called Wardog refused to die. Its battered, mismatched and disheveled appearance suggests it just crawled out of a scrap heap, which ironically helped it to blend in amongst the surrounding debris it marched past. Its hisses and clanking muffled by the explosions of war, it emerged from the dust cloud kicked up by the wind.
Alas, the enemy does not see it! The machine surges forward excitedly, rising to top speed, charging its main gun as it prepares to finish the remainder of the enemy!