Well, I tried. Twice, I sent Browne to Lobositz in the first turn of the 1756 scenario, just to see if the game would allow this first battle of the 7YW to be re-enacted. Both times Browne never made it, was intercepted by Fritz and friends in the region east of Lobositz and crushed. Losses on the order of 90% of initial strength, both times. Doesn't detract from the game, of course - but I wondered if it would let me carry out the historical opening move. Answer: a resounding NO!!
