The original logo for the Philadelphia Union featured an abstract design with two stars representing Pennsylvania’s flag and a blue stripe across it to represent the unity between players, fans, coaches, and staff members alike, alongside the Philadelphia Union Primary logo. This design remained until 2012 when it was replaced by a more traditional shield-style crest featuring three stars above an eagle clutching both American flags on either side as well as crossed swords underneath them symbolizing strength and courage during battle or competition; this version also included “Philadelphia” written at top center with “Union” below it along bottom edge respectively — all set against white background field containing navy trim around outer edges plus gold inner border surrounding entire image itself (which would later be modified slightly).

In 2017 there were further changes made to give their brand identity a more modern appeal such as switching out the old font for a new one (with serif accents) while keeping the same basic layout including colors/symbols previously mentioned earlier — the only difference being the addition single star just right side upper corner above eagle instead two previous versions had placed left lower portion near crossing swords area before then; other minor tweaks include changing shade blue used along trimming/borders from navy dark royal lighten up a bit make look brighter overall too plus making sure everything else stayed consistent order maintain continuity throughout organization's branding efforts moving forward into future years come next season year after that etcetera so forth… All these modifications have helped create a unique visual representation that stands today emblematic mark synonymous proud city-rich sporting tradition like none other!