comrade in arms

The Major introduced him as the son of an old friend—comrade-in-arms, he said, if I remember.

His old comrade-in-arms quickly mounted his horse, overtook Marshall, and insisted upon returning the check.

Bisset cleft the Saracen's skull to the teeth, and laughed defiantly as he avenged the fall of his comrade-in-arms.

The unexpected interference of their comrade-in-arms, coupled with his address and that of Jacques, had excited their curiosity.

The bearer of this letter is my old friend and comrade-in-arms, Henry Allen, who is coming East on an important matter.