Most books on the opening of the Great War tend to focus on either the political-diplomatic aspects, or the military aspects of that time; Hastings tries to do both, and largely succeeds. However, he does admit that there will likely never be a "definitive" account of the opening of the war, nor does he try to claim such for himself. His scope is fairly clear - 1914 from start to finish, with only limited mentions of a few events just before, and a few after, but covering as much of that as is manageable. Although he proceeds generally chronologically, he divides his chapters up between both the Western Front, which he acknowledges as key to the war's course, and spends several chapters covering Eastern Fronts not often covered in any depth (probably most notable being the Galician and Serbian Fronts). There is no real discussion of events outside of Europe.
In framing the outbreak of the war, Hastings explicitly rejects the notion that this war was morally different than the Second World War. Despite the writings of Sassoon and others, he does not see the war as being morally ambiguous or unclear. He firmly assigns the lion share of the blame for the war to Germany and Austria (with Russia as, perhaps, an honorable mention). But, he is quite clear in believing that, had Germany conquered in 1914 as they did in 1940, Europe would've been a far darker place than many realize, and he quotes from numerous sources to support that conclusion, primarily German. As part of this discussion, he delves a great deal into atrocities, real, imagined and feigned. The worst were, unsurprisingly in Serbia, where Austrian and Slavic hatreds ran deep. But he is quick to point out a good many German ones, as well, primarily in Belgium but also in France and Russia. Surprisingly to me, he portrays the Russians as quite chivalrous in their conduct, at least in 1914. His statistics are interesting -- for example, there were over 6000 documented civilian executions by the Germans in August 1914 alone; the Germans claimed the Russians killed around 100 over both August and September combined.
Hastings saves a lot of his ire for specific individuals. The Kaiser, for instance, "displayed many of the characteristics of a uniformed version of Kenneth Graham's Mister Toad." Or, "Conrad (Austro-Hungary's military leader) retained a boundless capacity for promoting disaster." However, his continuing ire is most reserved for Britain's field commander, Sir John French, a "poltroon" who he manages to berate at every turn, with a great deal of merit, I might add. Indeed, Hastings covers the British Expeditionary Force's activities in great detail, even while constantly reminding the reader that the French and Russians were fighting much larger battles, with tremendous losses (he points out that the deadliest day in WW1 was not at the Somme, but in 1914). He does not paint the British Army in a very positive light, at least in its effectiveness, though at the same time he heaps praise on the common soldiers and junior officers. The accounts of the BEF retreat from Mons, consolidation near Paris, the race to the sea, and the desperate defense of Ypres was quite engrossing.
What Hastings does most brilliantly, however, is to personalize his account using the words of those that lived through the war (and many that did not). Every page drips with personal anecdotes and stories, taken from journals, letters, and the like. From senior political and military leaders and their circles, down to common soldiers, peasants, and the like, he has a thousand personal details that really help to bring home the war and its effect on Europeans of all stripes. I could not possibly begin to do this part of the book justice, as the details are countless. (OK, I will include one: I did not realize that a single territorial unit of the British Army, the London Scottish Regiment, included the actors Basil Rathbone, Claude Rains, Herbert Marshall, Cedric Hardwicke, and Ronald Colman.)
So, next up is a slight departure with The Riddle of the Sands, by Erskine Childers. The novel has been mentioned in several of the books I've read thus far; the author has been mentioned as well, both for his book and the rather colorful life that he led during this time.