[execat]

> thinking the japs will invade from the sea

Be mindful of using terms that are widely recognized as racial slurs.

[decimalenough]

Some 50,000 of OP's father's compatriots were killed by the Japanese, the survivors can call the invaders what they wish.

[someperson]

OP isn't OP's father, and wasn't alive during WW2

[mortenjorck]

The OP is using it in a figurative quote attributed to the British armed forces, not in their own voice.