My perspective has definitely changed since I learned about WWI in high school.
Firstly I understand President Wilson lied to the American people saying they would not be involved. Sadly, at the time, for us Canadians, when the British said jump, we replied “how high”. We really had no sense of ourselves as an independent nation quite yet.
Secondly, as aggressive as the Germans were, the British bear more fault than we are told in our history books. The British just would not allow some wily “krauts” the right to build up their own navy. British vanity and war mongering certainly, IMHO, was a factor. The French were sore over previous skirmishes with the Germans, and the Russians just trigger happy where the Germans were concerned.
As far as conduct however, I understand the Germans (not sure about the Austrians) were particularly brutal. They shot citizens from entire small towns, tortured people, and treated their prisoners of war abdominally. The Allies treated populations and prisoners far more humanely.
The British also had some other marks on their reputation. They treated ANZAC troops like cannon fodder against the Turks. Not sure how I feel about the Arabism that was injected into the British psyche via Lawrence of Arabia and uniting Arab states against the Ottomans.
The British treatment of the Boers during The Boer War, really soured me a lot on them.
Ditto for the Boers (and yes I've probably watched 'Breaker Morant' about 50 times)