Girls Und Panzer: Ribbon Warrior by Nogami Takeshi — Ongoing

P03

"Tankathlon is a new form of tank sport gaining slowly gaining popularity among Senshado enthusiasts. While also involving tank battles, Tankathlon is distinguished by its lack of official oversight allowing any school with tanks to participate in a battle anywhere at any time, and a 10-ton weight restriction on tanks used, limiting battles to light tanks and tankettes." –Manga Updates

For the main series, click here.
For "Little Army", click here.
For the "Motto Love Love" spin-off, click here.

Chapter 1 released Sep 17 '14
Chapter 2 released Oct 11 '14
Chapter 3 released Nov 15 '14
Chapter 4 released Dec 26 '14
Chapter 5 released Feb 22 '15
Chapter 6 released Mar 22 '15
Chapter 7 released Aug 4 '15
Chapter 8 released Aug 21 '15
Chapter 9 released Nov 20 '15
Chapter 10 released Feb 19 '16
Chapter 11 released Jul 15 '16
Chapter 12: Jajka's Battle 2 released Dec 30 '16
Chapter 13: Tategoto Highschool's Aung-san - Part 1 released Dec 30 '16
Chapter 14: Tategoto Highschool's Aung-san - Part 2 released Feb 23 '17
Chapter 15: Kuromorimine Strikes Back - Part 1 released Mar 6 '17
Chapter 16: Kuromorimine Strikes Back - Part 2 released Jun 16 '17
Chapter 17: Kuromorimine Strikes Back - Part 3 released Jun 25 '17
Chapter 18: Kuromorimine Strikes Back - Part 4 released Jul 25 '17
Chapter 19: Kuromorimine Strikes Back - Part 5 released Jul 29 '17
Chapter 20: Kuromorimine Strikes Back - Part 6 released Sep 19 '17
Chapter 21: Kuromorimine Strikes Back - Part 7 released Sep 19 '17
Chapter 22: Darjeeling's entry released Sep 19 '17
Chapter 23: To each their own emotions Part 1 released Sep 19 '17
Chapter 24: Uszka's Feelings released Oct 4 '17
Chapter 25: Introducing the tanks!! released Oct 4 '17
Chapter 26: Arisa and Yojimbos released Oct 9 '17
Chapter 27: Orange Pekoe's Battle released Oct 31 '17
Chapter 28: Aung-san vs Nishizumi Mask! released Oct 31 '17
Chapter 29: Akaboshi Koume, Tactician released Nov 12 '17
Chapter 30: Nishi and Mika released Nov 12 '17
Chapter 31: Nina and Alina struggle hard released Nov 12 '17
Chapter 32: The Battle of Sado Island released Feb 13 '18
Chapter 33: Talks with friends for just one night released Feb 16 '18
Chapter 34: The Death Match of Komoro (Part 1) released Apr 29 '18
Chapter 35: The Death Match of Komoro (Part 2) released May 27 '18
Chapter 36: The Death Match of Komoro (Part 3) released Jun 15 '18
Chapter 37: The Death Match of Komoro (Part 4) released Jul 22 '18
Chapter 38: The Death Match of Komoro (Part 5) released Oct 17 '18
Chapter 39: The Death Match of Komoro (Part 6) released Jan 11 '19
Chapter 40: The Death Match of Komoro (Part 7) released Mar 4 '19
Chapter 41: The Death Match of Komoro (Part 8) released Mar 9 '19
Chapter 42: The Death Match of Komoro (Part 9) released May 22 '19
Chapter 43: The Death Match of Komoro (Part 10) released Jul 29 '19
Chapter 44: The Death Match of Komoro (Part 11) released Aug 17 '19
Chapter 45: Living Legend released Sep 11 '19
Chapter 46: We're all clumsy. released Sep 22 '19
Chapter 47: The Battle of Nayoro (Part 1) released Sep 26 '19
Chapter 48: The Battle of Nayoro (Part 2) released Jan 11 '20
Chapter 49: The Battle of Nayoro (Part 3) released Jan 18 '20
Chapter 50: The Battle of Nayoro (Part 4) released Mar 12 '20
Chapter 51: The Battle of Nayoro (Part 5) released Mar 22 '20