[Ennath]

April 24, 1877
Diplomatic Relations Russia declares war on the Ottoman Empire. Russian armies invade Rumania and the Caucasus. The Rumanians join with the Russians, who soon close up to Bulgaria.

April 24, 1915
Western Front At Ypres, the Germans resume the attack at St. Julien and Lizerne. Before dawn a cloud of chlorine gas floats over the Allied trenches, held by French, Belgian and Canadian troops. Though some units collapse, the vast majority hold the line, delivering a withering fire. The Germans manage to take St. Julien, but French and Belgian troops recover Lizerne. Canadian counterattacks at St. Julien fail. The battered 3rd Canadian Brigade is pulled out of the line.
At Les Eparges, the Germans takes 2 miles of frontline trenches.
Eastern Front Austrian troops capture the heights of Ostaij, southeast of Kosziowa.
Mediterranean Following a successful bombardment of Maidos the previous day, coordinated from the air by radio equipped planes, the Allied fleet of 200 ships carrying the invasion force for the Dardanelles sets out from Mudros harbor at Lemnos. The invasion is set for the next day. The lengthy delay of the planned invasion, however, has given Liman von Sanders time to gather his forces and build defensive positions in anticipation of the landing. Believing that the most likely spot for a landing is the south bank, he posts two divisions near Troy. He places two more divisions at Bulair. At Cape Helles, he places a single division. He keeps another division in reserve under Mustafa Kemal.
Turkey Armenian leaders in Constantinople are arrested. The head of the Armenian Church appeals to President Wilson for aid.
German East Africa There are clashes around Kilimanjaro.

April 24, 1916
Ireland Over a thousand armed Irish men and women led by James Connolly, a trained soldier and leader of the Socialist Republican Party, along with Patrick Pearse and other members of the Republican Brotherhood attempt to seize control of Dublin. Their aim is to destroy British rule and create an Irish Republic. Against their uprising are aligned the forces of the 10,000 man Royal Irish Constabulary (mostly kinsmen), the 1000 man Dublin police force (unarmed), and both the Irish Volunteers of the Irish Nationalist Party (supporters of Home Rule) and the Ulster Volunteers (opponents of Home Rule). Both of the latter groups, along with a majority of the Irish people, have accepted the postponement of Home Rule for the duration of the war. The rebels seize fourteen of the city’s major buildings, establishing their headquarters at the General Post Office. They fail, however, to take Dublin Castle, the nexus of British rule. Officials at the castle call in reinforcements from outside the city and from Britain.
World Affairs A Socialist conference opens at Kienthal, Switzerland. The delegates denounce the war as a capitalist conspiracy.

April 24, 1917
Western Front, Arras The British reach the St. Quentin Canal and take Bithem. The Reserve Army Group is disbanded; Micheler remains the operational commander of the offensive.
Macedonia With the blessing of the Allied leaders, General Sarrail, Allied commander in chief in Macedonia and Sir George Milne, commander of the British Salonika Army, have planned a combined offensive against the German and Bulgarian forces on the Salonika Front. French, Italian, Serbian and Russian forces will attack in the Cerna River sector, and the British will focus on the Lake Doiran sector. As heavy snow deters Sarrail’s attack in the west, Milne’s offensive opens first. British troops begin the assault in the darkness shortly before 10:00 PM, but the Bulgarians have long anticipated the attack and are well entrenched, with concrete dugouts commanding the heights. The British attack ends in overall failure.
Mesopotamia The Turks are in retreat to Jebel Hamrin. One of Maude’s units occupies Samarra, another at the Shatt al-Adhaim attempts to outflank the Turks at Danuba.
Russia Ukraine demands autonomy.
Portugal Senator Costa becomes Premier.
War at Sea After consulting with British and French naval representatives in Washington, Navy Secretary Daniels has concurred in focusing American naval efforts on patrolling the U.S. coast, the Caribbean and Gulf of Mexico, and the coasts of Canada and South America, while sending a token force of 6 destroyers to Europe. This force now departs Boston harbor for Queenstown, Ireland. These and any subsequent American ships sent to Europe will be under the command of Rear Admiral William Sims.
English Channel German destroyers raid Dunkirk, sinking a French destroyer.

April 24, 1918
Western Front A German attack in the Amiens sector takes Villers-Bretonneux and Hangard. Plumer is able to relieve more troops on the front lines and Foch sends two more divisions to Flanders.
Macedonia There is fighting west of Doiran and at the Cherna Bend.
Palestine A 53-mile section of the Hejaz Railway south of Ma’an is effectively occupied by Arabs.
Austria-Hungary Count Serenyi tries to form a new Hungarian ministry, but fails.