Pro — from professional, the contraction of the end of the word

6. Hedy cut a giant birthday cake and kissed six GIs7 whose birthday it was.

Хеди разрезал гигантский торт ко дню рождения и поцеловал шесть солдат, у которых и было день рождения.

GI — Government issue. WWII servicemen – Initial abbreviations which are pronounced as a series of letters they are called Abbreviations

WWII – World War II – Initial abbreviations which are pronounced as a series of letters they are called Abbreviations

7. A few minutes later the adjutant and the O. D.1 and a disagreeable master sergeant were in a jeep tearing down the highway in pursuit of the coloured convoy.

Через несколько минут адъютант, постовой и неприятный мастер-сержант неслись в джипе по шоссе в погоне за черным {представитель чёрной расы; представитель смешанной расы; мулат; метис; негр} конвоем.

O. D. — officer of the day, officer on duty – Initial abbreviations which are pronounced as a series of letters they are called Abbreviations