If you buy Russell’s forthcoming book you won’t need to research it, he will have done the hard work!
The landings and taking of Diego Suarez make great wargame/series of games.
I picked up a copy of Christopher Buckley’s ‘Five Ventures’ at HMSO sometime in the early 80s and one of those ventures is the attack on Madgascar. A friend made an excellent map game out of it. I’ve played that and several landing assault figure games – including unfeasibly exciting destroyer dashes to land commandos in the rear of determined French resistance.
I think a book on the entire campaign sounds like a great idea, whatever it is called.