Egypt breached the Bar-Lev defensive positions by combining surprise, a mass infantry assault and rapid engineering work. Operation Badr began on October 6, 1973, with an airstrike and artillery barrage; Egyptian infantry crossed the canal in boats while combat engineers opened routes through the sand embankment and installed bridges. The crossing established Egyptian positions on the eastern bank inside Sinai.
Surprise and the first crossing
Egyptian preparations had been repeatedly presented as exercises, and earlier mobilizations had prompted Israeli call-ups without a war. That pattern helped conceal the final operation. The Egyptian plan focused on a limited advance beneath the range of its surface-to-air missile defenses, rather than an immediate drive deep into Sinai. This aim differed from Israeli assumptions about what capabilities Egypt would need before attacking.
On the afternoon of October 6, infantry units crossed in waves using assault boats. Their task was to secure bridgeheads and blunt Israeli counterattacks. Combat engineers followed with equipment to breach the canal-side sand rampart. U.S. Army historical analysis records the first wave at about 8,000 men in roughly 1,000 boats, while emphasizing that subsequent forces crossed over time rather than all at once.
How engineers opened the sand barrier
Egyptian engineers used high-pressure water pumps drawing from the canal to wash away sections of the sand wall. The method created vehicle passages faster than demolition alone would have allowed. Engineers then assembled pontoon bridges and operated ferries so that heavier equipment could cross. The engineering solution—not an unsupported claim about hundreds of disguised agricultural pumps—made the breach practicable under fire.
The Bar-Lev Line consisted of fortified positions along the canal, not an unbroken wall capable of stopping a full-scale crossing by itself. Its outposts were isolated by the speed and scale of the assault, and several were bypassed or captured. The crossing gave Egypt a bridgehead and changed the military situation in Sinai, while Israeli forces continued fighting to contain and later reverse the advance. U.S. Army history explains the pump method and engineering sequence in Combined Arms in Battle Since 1939; the Army War College study of Egyptian deception details how exercises and repeated mobilizations helped mask the attack.