gundam thunderbolt
An ongoing Gundam manga series by Ohtagaki Yasuo that began publication in 2012. Set in an alternate version of the Universal Century timeline, during and after The One Year War.
A web anime adaptation was released in 2015, and was compiled into a film titled Gundam Thunderbolt: December Sky in 2016. A second set of web anime episodes were released in 2017, and compiled into a film titled Gundam Thunderbolt: Bandit Flower later that year.
This tag implicates gundam (learn more).