original_query: What was the purpose of assembling the units at a jumping-off point north-west of the camp?
query: What was the purpose of assembling the British and Indian units at a jumping-off point north-west of the Nibeiwa camp during Operation Compass?
answer: The British and Indian units assembled at the jumping-off point north-west of the Nibeiwa camp to launch their attack on the camp from the west, as part of Operation Compass.