備 耕 bèi gēng : make preparations for ploughing and sowing

經 營 管 理 和 維 護 jīng yíng guǎn lǐ hé wéi hù : Operations Administration and Maintenance; OAM

老 驥 伏 櫪 志 在 千 里 lǎo jì fú lì zhì zài qiān lǐ : (lit.) an old steed in the stable still aspires to gallop 1000 li; (fig.) old people may still cherish high aspirations

戰 區 zhàn qū : war zone; (military) theater of operations

作 戰 zuò zhàn : conduct (military operations)