Egyptian troops raised their national flag on the eastern bank of the canal at 14:35. By that time company and battalion-size units of Israeli tanks and infantry began reaching the Bar Lev Line, but were prevented from reaching their positions by Egyptian ambushes. Those tanks that broke through came under fire from the west bank ramparts. At 14:45, a second wave of infantry landed on the opposite bank. Subsequent waves of infantry arrived at fifteen-minute intervals. However, after the fourth wave, fatigue and technical problems with the boats gradually widened the time intervals. The Egyptians abandoned their schedules, giving priority to anti-tank teams and weaponry that could critically affect the battle. Amphibious vehicles were also used to cross equipment. The wooden carts were ferried to the east bank via boats, where they were initially lifted to the top of the sand wall with their loads. However, this method proved clumsy, and the carts were first emptied then lifted, after which they were re-loaded and dragged to troops on the front line. The carts greatly facilitated the supply and transportation of matériel on the east bank.