It's the Swiss Cross

Media Matters - O'Reilly falsely claimed Red Cross symbol was "adopted" because of "Christian philosophy": "In a discussion about a lawsuit filed over the presence of a large cross at a war memorial in San Diego, Bill O'Reilly falsely claimed that the Red Cross 'historically ... adopted' its emblem 'because of the Christian philosophy of giving alms and giving assistance to people in need.' In fact, according to the American Red Cross website, it was '[i]n honor of the Swiss ... [that] the symbol of a red cross on a white background (the reverse of the Swiss flag) was identified as a protective emblem in conflict areas. . .'"