[zandtar]

I think it was actually 2 waves. First wave was the incendiary bombs, which started the fires. Next wave was about 15-30 minutes later with fragmentation bombs. Start the fires then wait until the firefighters come out to start fighting the fires. In come the fragmentation bombs to take as many of them out as possible so the fires cause maximum damage and spread. Cold, calculating, and nasty business. But highly effective.

[DuncanWaring]

Possibly. I don't recall those details, and my copy of Mission With LeMay is packed.

At Hamburg, they dropped HE first to damage the water mains and make fighting the fires more difficult, then followed up with Incendiary. See The Night Hamburg Died by Martin Caidin.