Arab hopes collide with empire power as Hussein's letter sparks a revolt against Istanbul.

Ottoman caliphate calls for jihad; Arab trepidation and imperial strategy set the stage for revolt.

Lawrence guides irregular warfare against the Hejaz railway, dragging the Ottomans into a long attritional contest.

Surprise inland march and a sea feint secure Aqaba, lifting Arab prospects and complicating supply lines.

Allied pressure fractures Ottoman hold; key cities fall, and Arab governance swells with fragile hope.

Postwar treaties redraw maps, fueling Arab nationalism and setting the stage for modern disputes.