1st Recruit Training Battalion A Copy of1RTB Medical Training: Lesson Guide. This has a red coloured cardboard cover with T RTB Medical Training near the top, under this is the insignia of the Royal Australian Army Medical Corps followed by the words Lesson Guide. The booklet is held together with a metal slide at the top. Some of the pages are longer than the cover.booklet, 1 rtb, 1st recruit training battlaion, kapooka, medical training, lesson guide, royal australian army medical corps