Two weeks passed as the bored crusaders entertained themselves with feasts, games, and insulting the martial prowess of their enemy. Whether through drunkenness or carelessness, the crusaders posted no sentries, though foragers venturing away from the camps brought word of the Turks' approach. Bayezid was at this time already through Adrianople and on a forced march through the Shipka Pass to Tirnovo.[37] His ally Stefan Lazarević of Serbia joined him on the way.[citation needed] Sigismund had sent 500 horsemen to carry out reconnaissance in force around Tirnovo, 70 miles (110 km) to the south, and they brought word back that the Turks were indeed coming.