The Battle of Britain could not stop Operation Sealion, the planned German invasion. The historians got it wrong. This is a big claim to make, yet the reasoning behind it is remarkably straightforward. In Invasion 1940, author Derek Robinson asks why historians have dovetailed the Battle of Brita[...]

From the Phoney War of 1939 to the Battle of Britain in 1940, the pilots of Hornet Squadron learn their lessons the hard way. Hi-jinks are all very well on the ground, but once in a Hurricane's cockpit, the best killers keep their wits close. Newly promoted Commanding Officer Fanny Barton has a job[...]

North Africa, 1942. Dust, heat, thirst, flies. A good clean fight, for those who like that sort of thing, and some do. From an advanced landing field, striking hard and escaping fast, our old friends from Hornet Squadron (Piece of Cake) play Russian roulette, flying their clapped-out Tomahawks on gr[...]

1917: pilots seek distraction from certain death as the air war intensifies...

"An excellent up-to-date introduction to the theory of groups. It is general yet comprehensive, covering various branches of group theory. The 15 chapters contain the following main topics: free groups and presentations, free products, decompositions, Abelian groups, finite permutation groups, repre[...]

A Course in the Theory of Groups is a comprehensive introduction to the theory of groups - finite and infinite, commutative and non-commutative. Presupposing only a basic knowledge of modern algebra, it introduces the reader to the different branches of group theory and to its principal accomplishme[...]