Like the title says, give me manga to binge with at least 50+ chapters. would prefer if it was a action preferably with war (doesn't matter the era or genre) . examples pumpkin scissors, ubel blatt, akatsuki no yona, kingdom, drifters, sidonia no kishi, gundam, anatolia river, arslan senki, dr stone, the promied never land , historie, ad astra scipio to hannibal and so forth don't recommend famous ones from jump like one piece and naruto, since most likely I have read that already
ARIA? not your preference certainly, but it is rather peaceful one. well... since you want some kind of action, how about Mx0?
Red Storm Franken Fran (horror) Dragons Rioting (ecchi) Yongbi Ruler of the Land Feng Shen Ji City of Darknes
Ares Basara (female MC) Berserk (more concentrated on OP characters) Break Blade Claymore Full Metal Panic Gate - Thus the JSDF Fought There! Gunka no Baltzar Helck Historie ID (more concentrated on OP characters) Red Eyes Red Storm There are plenty more but these are only ones I can think of atm. They all have plenty of action and some war events.
Pretty much everything over 50 chapters is big. So I'm just going to recommend some without minding the chapter requirement or the war thing too much. Koe no Katachi. Just imagine all those elementary schoolers are carrying guns and your tears are open wounds. Rain Record of Fallen Vampire Psyren Darwin's Game Tsubasa Reservoir Chronicles Witch Hunter Gamaran Immortal Regis + Cavalier of the Abyss Drifters Beelzebub Cage of Eden Arachnid Tenjou Tenge All You Need is Kill Blood Lad Code;Breaker Mx0 Defense Devil Nurarihyon no Mago Ga-rei Terraformars 07 Ghost Kekkaishi Sousei no Onmyoji Yumekui Merry
Well if you want war then it would be wrong of me to not suggest The Ravages of Time. lol Also Chang Ge Xing, though this one is on indefinite hiatus.
Kengan Asura, unfortunately its no longer being translated and I doubt there's even an official translation going on. Really awesome martial arts series without Ki or Magic though
War mangas....try these... all quite long... Golden Kamuy - set in Hokkaido Japan Youjo Senki - adapted from novel, isekai, set in alternate world Ryuuroden - fiction wuxia of Three Kingdoms Vinland Saga - viking stuffs Rain - fantasy world, medieval setting Basara - middle east-ish Adolf - awesome Tezuka, completed