A version of the War Doctor existed in the Daft Dimension.
He joined his other incarnations for Christmas in the TARDIS on at least two occasions; first at a gathering of himself and his first twelve numbered incarnations, where he remained grumpy the whole time, and then at a Christmas dinner held by his thirteenth incarnation, where he became absorbed in a copy of The Daleks. (COMIC: The Daft Dimension 507, The Daft Dimension 559)
Also with his other incarnations, he was arrested by the Judoon and incarcerated at their maximum security facility. (COMIC: The Daft Dimension 550)
On yet another occasion, he and his other selves responded to a premature summons from the Thirteenth Doctor to celebrate sixty years of their adventures. (COMIC: The Daft Dimension 571)
He was present when the Eleventh Doctor and the Curator observed the Gallifreyen painting in the Under Gallery (TV: The Day of the Doctor) which, in this universe, was instead titled No More Gallifrey Falls, and depicted the demolishing of the Gallifrey Falls beauty spot to make way for a multi-storey car park. The War Doctor expressed his annoyance at not knowing that Gallifrey had cars before "schlepping" across the desert. (COMIC: The Daft Dimension 564)