strike one's flag

Verb

especially broadly idiomatic

(military, especially naval) To take down one's national or other representative flag in order to indicate surrender. / (idiomatic, by extension) To yield, give up, or surrender.

Japanese Meaning

旗を下ろして降伏を示す。 / 譲歩、降伏、または諦める行為を示す。

What is this buttons?

Facing inevitable defeat, the captain had no choice but to strike one's flag and surrender his ship.

Google Translation / DeepL Translation

避けられない敗北に直面し、艦長はやむを得ず自艦の国旗を降ろして降伏した。

Details

Sense（1）

(military, especially naval) To take down one's national or other representative flag in order to indicate surrender.

At length, having lost her fore and main-top-masts, and her mizzen-mast having been shot away to the deck, . . . the English frigate was reduced to the last extremity. Captain Cardan ordered his signal quarter-master to strike the flag.

Google Translation / DeepL Translation