“… Our Brig. Went into action in mass by batallion when the first or advance rigiment was ordered to fire they were to lay down then the 2nd march over them, fire and lay down, & so on. We did not commence fireing untill close to the masked battery“.
From the Friends of Resaca website, this article by W.F. Jenkins of the 105th Illinois describes how they were to advance. This illustrates one difference between a mock battle and a real one. Not only were they too mixed up and scattered to have proceeded this way (and no one said they had), Harrison’s 70th Indiana and the 102nd Illinois literally ran ahead. The others laid down under fire and then got more mixed up. By then Jenkins’s regiment, the last in column, could not have marched over the others in any organized fashion. (Text is as Jenkins wrote it.)
They All Wore a Star 