Henry Horne, 1st Baron Horne
...that Henry Horne, 1st Baron Horne was the only British artillerist to command an army in World War I?
...that <b id="mwA70"><a href="./Henry_Horne,_1st_Baron_Horne" id="mwA74" rel="mw:WikiLink" title="Henry Horne, 1st Baron Horne">Henry Horne, 1st Baron Horne</a></b> was the only <a href="./British_Army" id="mwA78" rel="mw:WikiLink" title="British Army">British</a> artillerist to command an <a href="./Army" id="mwA8A" rel="mw:WikiLink" title="Army">army</a> in <a href="./World_War_I" id="mwA8E" rel="mw:WikiLink" title="World War I">World War I</a>?