如二枝合營(yíng),則以各左右二部,共四部為外圍,以各中部為子圍,自前門平分。又如三枝合營(yíng)。則以二營(yíng)俱為外營(yíng),一營(yíng)為子營(yíng)。四枝合營(yíng),則以各左右部為外營(yíng),各中部為子營(yíng),中軍各居中四角,大中軍俱中,每營(yíng)皆自正面中分,各得一角兩半面。五枝合營(yíng),外四枝各左右部各分一面為外營(yíng)一層,各中部為二層,中營(yíng)一枝為子營(yíng)。計(jì)兵三層,各中軍居各營(yíng)角內(nèi),中營(yíng)與大中軍俱居中,合為一萬(wàn)五千之營(yíng),謂之一小城也。再添幾枝,照此加增,所謂多多益辨也。大而十營(yíng)五營(yíng),小而一局一宗,以至一伍五人,一隅三人,平時(shí)則在教場(chǎng),急時(shí)則在對(duì)壘,學(xué)戰(zhàn)實(shí)戰(zhàn),皆照此。以為攻擊進(jìn)止,一字不易。