Which preposition to use with campaigner

in Occurrences 5%

Australia's valiant sons constituted many brigades of horse and, with New Zealand mounted regiments, became the most hardened campaigners in the Egyptian and Palestine theatre of operations.

of Occurrences 2%

An old and valued friend, a campaigner of the war-time days, met him at the Gare de Lyon in response to a telegram.

after Occurrences 1%

Without word or sign from us he threw his kit on the floor, unrolled his blankets, removed his boots, curled up on the sofa, and if he didn't go to sleep at once, gave such a perfect imitation of it that somebody's fox terrier came and sniffed him, and, recognizing a campaigner after his own wandering heart, jumped on his chest and settled down to sleep too.

by Occurrences 1%

So he called for the servant again, and proved himself a good campaigner by superintending the packing of a big basket with provisionsbread and butter, cold chicken, wine, olives, and hot coffee in a thermos bottle.

Which preposition to use with  campaigner