 Complete the following phrase:  Tilghman was commissioned colonel of the 3rd Kentucky Infantry on July 5, 1861, shortly after the start of the American Civil War. He was promoted to brigadier general in the Confederate States Army on October 18. When General Albert Sidney Johnston was looking for an officer to create defensive positions on the vulnerable Tennessee and Cumberland Rivers, he was unaware of Tilghmans presence in his department and another officer was selected. However, the Richmond government pointed out Tilghmans engineering background and he was finally chosen for the task. The original sites for Forts Henry and 