United Kingdom

The UK has been a consistent and dependable ally of the United States in Afghanistan. In the very early days of the conflict the UK committed their special operations units to the fight. The United Kingdom also played a major role on the ISAF staff, in the training institutions, and especially in Helmand province.

References

Paper on Afghanistan - UK. The Select Committee on International Relations and Defence has published a paper entitled The UK and Afghanistan. Annotated as HL Paper 208, 13 January 2021.
https://publications.parliament.uk/pa/ld5801/ldselect/ldintrel/208/20802.htm

News Reports about the UK in Afghanistan

December 22, 2015. "UK Troops in Afghanistan: Timeline of Key Events", BBC News. For 13 years, between 2001 and 2014, the UK was involved in the conflict in Afghanistan against the Taliban and fighters from al-Qaeda.