Tenka Sentai GrandSaber

When an Insane and Demonic Army arise in Antarctica, they send out 5 factions to take over the continents while the leader and his followers take over antarctica, months and years later they have had every 10 ranger Swordsmen Squadron be defeated,
The Crueldon Army/Zankokudon Guntai arrives in Asia and gathers all their forces successfully, taking over every country in the continent and leaving the Country of Japan as the final target which they think is a piece of cake.
They finally arrive there and start causing destruction when ten Kenshi arrive and transform into the Tenka Team with the power of support from their fallen friends.