I’ve done quite a bit of searching and can’t find anything on this. That brigade has gone by a few names over time though.

The 1st (West Africa) Infantry Brigade was originally raised in 1940 as the 3rd (Nigerian) Brigade. In this guise it was involved in the East African Campaign against the forces of the Italian Empire in Kenya under the command of Brigadier Gerald Smallwood. Later it was renamed the 23rd (Nigerian) Brigade and was attached to the 1st (African) Division

Link.

Anyone got any context on this? It sounds fascinating.

edit: 744 miles is almost exactly 1200KM for anyone else with context.

edit edit: Found it.