 his primary line of defense will be placed north south along mcpherson's ridge and he'll put cavalry vedettes small detachments forward uh to sense when in fact the confederates will advance as you say about 7 30 in the morning a mile due west of mcpherson's ridge a young union cavalry officer will take a a piece from one of his sergeants he'll fire one round down the road as he can hear the advancing confederate infantry and then they'll jump on their horses and race back to the primary line of defense at mcpherson's ridge