Sentence:  When you've shouted "Rule Britannia", when you've sung "God Save The Queen",/ When you've finished killing Kruger with your mouth;/ Will you kindly drop a shilling in my little tambourine/ For a gentleman in <WSD>khaki</WSD> ordered South? 
Meaning of the word marked with <WSD> tags:  A dull, yellowish-brown colour, the colour of dust.