The end of the 1967 Six-Day War redrew the map of the Middle East. Israel's swift victory left it in control of the Sinai Peninsula, wrested from Egypt, and the Gaza Strip. This new reality created a buffer zone but also sowed the seeds of future conflict. The border was no longer a line on a map but the Suez Canal itself, a vital international waterway now separating two entrenched armies.

The years that followed were anything but peaceful. A low-grade, simmering conflict known as the War of Attrition erupted along the canal. From 1967 to 1970, Egyptian and Israeli forces engaged in a grinding cycle of artillery bombardments, commando raids, and aerial dogfights. It was a war of exhaustion, designed by Egypt's Gamal Abdel Nasser to inflict continuous casualties on Israel and make its occupation of the Sinai untenable.

After Nasser's death in 1970, Anwar Sadat became Egypt's president. He inherited a nation frustrated by the military stalemate and economic strain. Sadat believed the diplomatic freeze could only be broken by a military shock. His goal was not to destroy Israel, but to score a limited, decisive victory. This, he calculated, would shatter Israel's sense of invincibility and force the superpowers to broker a settlement that would return the Sinai to Egypt.

In response to the War of Attrition, Israel constructed a formidable defensive line along the eastern bank of the Suez Canal. Named after General Haim Bar-Lev, the Bar-Lev Line was a chain of fortified strongpoints, or 'maozim', built into massive sand ramparts. These ramparts, some over 20 meters high, were designed to give Israeli defenders a clear line of sight and prevent any amphibious crossing. The line was a testament to Israeli engineering and a symbol of its defensive strategy.

Israel's confidence wasn't just in its fortifications; it was rooted in a core intelligence assessment known as 'The Concept' (HaKoncepcia). This doctrine held that Egypt would not dare to launch a full-scale war until it achieved two key conditions: first, acquiring bombers capable of striking deep into Israel to neutralize its air force, and second, obtaining Scud missiles to deter Israeli retaliation against Egyptian cities. Since Israeli intelligence knew Egypt lacked these capabilities, they concluded that war was not an imminent threat. The Gaza Strip, under Israeli control since 1967, was developed as a crucial logistics and intelligence hub, a rear base supporting the Sinai front, all under the assumption that 'The Concept' was sound.

This assumption proved to be one of the most significant intelligence failures in modern history. It created a blind spot that prevented Israeli leaders from correctly interpreting the clear signs of an impending Egyptian and Syrian attack. They saw the military buildup along the borders but dismissed it as another bluff or a limited exercise. The belief in 'The Concept' was so ingrained that it overrode all other evidence, leaving Israel dangerously unprepared for the war that was about to erupt.

Now that you have a sense of the pre-war situation, let's test your knowledge.

The stage was set. Egypt was determined to break the stalemate, and Israel was confident in its defenses and its intelligence. The calm was about to be shattered.