In our collection you will encounter military terminology and acronyms. Here you can find out what they mean:

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X

Explosive

X Corps HQ Sig Coy

1st ANZAC Corps Headquarters Signals Company and X Corps Headquarters Signals Company [First World War AIF Signals Unit]

X list

Lists members of a unit who are absent. Enables a unit to maintain its establishment strength

X2A MTM Bty

X2A Medium Trench Mortar Battery [First World War AIF Artillery Unit]

X5A MTM Bty

X5A Medium Trench Mortar Battery [First World War AIF Artillery Unit]

Xcraft

Two men submarines

Xgun

Gun position overlooking the quarter deck, just for'ard of Y gun

XO

Executive Officer

Xrds

Cross roads

X‑line

One of the parallel lines extending from west to east in the military grid system of a military map (USA)