I started on both easy and normal then purchased 12 new soldiers. Counter did not go up but once i selected the new troops showed 12(24) as 12 available and 12 in route.
troops arrived on 4th day and i put them into 10 day training. Went back to check on them at days 14, 15, 16, 20, 28... and still in training
there must be a counter error here, i would think