private void editTank_Click(object sender, MouseButtonEventArgs e)
        {
            if (dynamicTankList.SelectedItem == null) {
                return;
            }

            AddTank addTankWindow = new AddTank(tactics.getTanksObj(), (DynamicTank)dynamicTankList.SelectedItem);
            addTankWindow.ShowDialog();

            if (!addTankWindow.dialogResult) {
                return;
            }

            tactics.editTank(addTankWindow.newtank);
            briefing.reloadDynamic();
        }
        private void addTank_Click(object sender, RoutedEventArgs e)
        {
            AddTank addTankWindow = new AddTank(tactics.getTanksObj());
            addTankWindow.ShowDialog();

            if (!addTankWindow.dialogResult) {
                return;
            }

            tactics.addTank(addTankWindow.newtank);
            briefing.reloadDynamic();
        }