esim_url_battles_changer.user.js

// ==UserScript==
// @name         e-sim Battles Url Changer
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        *.e-sim.org/*
// @grant        none
// ==/UserScript==

(function() {
    let battles_d = document.querySelectorAll('.has-dropdown');
    let server = window.location.host.split('.')[0]
    battles_d[4].querySelectorAll('li')[1].querySelector('a').setAttribute('href', '/battles.html?countryId=-1&sorting=BY_TOTAL_DAMAGE&filter=NONE')

    //    battles_d[4].querySelectorAll('li')[1].querySelector('a').href = protocol + '://' + server + '.e-sim.org/battles.html?countryId=-1&sorting=BY_TOTAL_DAMAGE&filter=NONE';
})();