How to: Infantry only mode - the code (example)

function OnInitID()

    -- [[ Markers ]]

    -- [[ Squad Groups ]]

    -- [[ Entity Groups ]]

    local _vehicleAbilities =  {
        "mechanized_grenadier_group", "supply_truck", "tiger_tank", "mortar_halftrack", "elefant_unlock", "tiger_tank_ace", "stug_short_barrel", "stug_iii_e", "armor_commander",
            "mechanized_assault_group", "cmd_kv-8_unlock_mp", "cmd_advanced_t34_85_medium_tank", "cmd_t34_85_medium_tank", "cmd_isu-152", "cmd_is2_heavy_tank", "cmd_kv-1_unlock", "kv-2",
        }

    local SBP_IsVehicle = function(sbp)
        --Skip problematic squads (pak creates splats, panzer_iii causes an error due to not existing yet)
        local _skip_sbp = {
            [1] = {
                name = "pak43",
                isVehcle = false,
            },
            [2] = {
                name = "panzer_iii",
                isVehcle = true,
            },
        }
        local isVehcle = false
        local pos = World_Pos(-512, -512, -512)
        local skipSBP = false

        for key, _sbp in ipairs(_skip_sbp) do
            if string.find(BP_GetName(sbp), _sbp.name) then
                isVehcle = _sbp.isVehcle
                skipSBP = true
            end
        end

        if not skipSBP then
            local squad = Squad_CreateAndSpawnToward(sbp, World_GetPlayerAt(1), 1, pos, pos)
            local entity = Squad_EntityAt(squad, 0)
            if Entity_IsOfType(entity, "vehicle") and not Entity_IsOfType(entity, "team_weapon") then
                isVehcle = true
            else
                isVehcle = false
            end
            Squad_Destroy(squad)
        end
        return isVehcle
    end

    for key, race in pairs(SBP) do
        for key, sbp in pairs(race) do
            if SBP_IsVehicle(sbp) then
                for i = 1, World_GetPlayerCount() do
                    Player_SetSquadProductionAvailability(World_GetPlayerAt(i), sbp, ITEM_REMOVED)
                end
            end
        end
    end

    for key, abp in ipairs(_vehicleAbilities) do
        for i = 1, World_GetPlayerCount() do
            Player_SetAbilityAvailability(World_GetPlayerAt(i), BP_GetAbilityBlueprint(abp), ITEM_REMOVED)
        end
    end
end