(I only own the characters that are I the Public Domain)
In 1915 after the start of WWI the British government, had been attacked by a group of German spies lead by a Mr. Altamont, who had stolen a large amount of Heat Rays that had been salvaged from the Martian invasion of Earth.
Mycroft Holmes feared that the weapons would be installed, into Dr. C.A. Rotwang's robots so needless to say something had to be done.
Now since the second Murry group was busy at the time, with wartime activities Mycroft had to build a scab League again only this time he wouldn't make the same mistakes he did last time.
The leader of this group was Jack Maceath, a master criminal and the man who committed the Whitechapel murders and also a former member of the League of Murderers.
The second in command was police inspector (and Mack's best friend) Tiger Brown, who had once been forced to bring his friend in after it turned out he had done the Whitechapel killings.
Popeye the Sailor was the third, because of his strength (and because even being a member of the League of Fools didn't hinder him) he was an invaluable asset to the group.
The fourth was the brutal pugnacious sailor named Captain Kettle, he was willing to kill if it meant getting him money and so he agreed to join.
And the last member was an international criminal known as Desperate Desmond, who had been willing to do this in exchange for diplomatic immunity while in England.
This group was first dropped behind enemy lines, and then fought their way to the Berlin Metropolis, where they intercepted the cargo and managed to return it to the hands of the English government
It should be noted that another such group was used to defeat the Aeronaut Jean Robur.