Blackadder Goes Forth was the fourth and final series of the BBC situation comedy Blackadder, written by Richard Curtis and Ben Elton, which aired from 28 September to 2 November 1989.

The series placed the recurring characters of Blackadder, Baldrick and George in a trench during the First World War. The episodes featured a darker, more satirical edge with more realistic writing and stronger character development over the earlier series. The series was particularly strong in its criticism of the British Army leadership during the campaign, as well as dropping a number of references to famous figures of the age. In addition, the series is remembered for the poignant ending of the final episode.

The series was well regarded at the time, winning the British Academy Television Award for Best Comedy Series in 1989 and in 2000 was placed 16th by industry professionals in a list of the 100 Greatest British Television Programmes compiled by the British Film Institute .

It is 1917, and lunatic General Sir Anthony Cecil Hogmanay Melchett is leading the British troops at the front lines against the Germans, while everyone waits for Field Marshall Haig's big push. There are various emotions throughout the camp about it. For Captain Kevin Darling, Melchett's bull-dog-like right-hand man, it makes no difference, as it appears he will be safe and sound with the general when the big push occurs. For Lieutenant George Colhurst Saint Barleigh, he is overly excited at thrashing the Germans. For Private S. (probably for Sod-Off) Baldrick, it's a terrifying experience he is not looking forward to. For Captain Edmund Blackadder, however, it's something he's too cowardly too face. Self-centered, arrogant, and sarcastic, Blackadder is always constantly searching for a way out of this silly war, and will try various, often crazy, variations on escape, all of which will take a turn he never expected. Sharing a dugout with George and Baldrick, his main obstacle for escape is Darling, who will ensure everyone is present for the big push. Written by Bloggers!

In this series, Captain Edmond Blackadder is an intelligent, self-centered officer in the trenches of World War I, whose aim is to survive til the war is over. He is assisted by the eager but stupid Lt. George Colthurst and the moronic, grungy Private Baldrick. Blackadder's commander is the insane General Melchert, who is assisted by Blackadder's rival Captain Darling. Written by Reid Gagle