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.
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).