His next posting was as Military Secretary at General Headquarters ( GHQ ) of the British Expeditionary Force under the Commander-in-Chief ( C-in-C ) , Field Marshal Sir Douglas Haig .
PRON ADJ NOUN AUX ADP PROPN PROPN ADP PROPN PROPN ( PROPN ) ADP DET PROPN PROPN PROPN ADP DET NOUN ( X ) , PROPN PROPN PROPN PROPN PROPN .