The theme of the first Window is weapons of war.
The quotation reads: "I heard a voice from Heaven saying unto me write";
there is no reference on the window but this is taken from Revelation 14 v13:
"And I heard a voice from Heaven saying unto me, Write, blessed are the dead which die in the Lord from henceforth: Yea, saith the Spirit, that they may rest from their labours; and their works do follow them."
Starting from the bottom of the left-hand side and going in a clockwise direction, the panels illustrate:


Proclaim ye this among the Gentiles; prepare war, wake up the mighty men Joel 3 v9

Whatsoever thy hand findeth to do, do it with thy might Ecclesiastes 9 v10

When the blast of the terrible ones is as a storm against the wall Isaiah 25 v 4

And signs in the earth beneath; blood, & fire & vapour of smoke Acts 2 v19

Thou shalt not be afraid for the terror by night Psalm 91 v5

“the window is an exact copy taken from the Imperial War Museum photograph No C0988 of a Mark 1 tank, showing a most unusual feature… the drum or bobbin arrangement which can be seen above the cradle of the tail wheels. Does any reader know what this device is for?..” extract from a letter to The Tank, 1969 But the man that shall touch them must be fenced with iron 2 Samuel 23 v7

German aeroplane, believed to be a French built SPAD fighter used by both British and American forces Though they climb up to Heaven, thence will I bring them down Amos 9 v2

There is neither speech nor language, but their voices are heard among them Psalm 19 v3

Though they dig into Hell, thence shall my hand take them Amos 9 v2