Semper Nexus

A web-based application for monitoring military directives, messages, and publications from multiple sources.

Created by Nexus.

Features

Message Types

• MARADMIN: Marine Administrative Messages from Marines.mil
• NAVADMIN: Navy Administrative Messages from MyNavyHR
• ALNAV: All Navy Messages (placeholder - awaiting RSS feed)
• SECNAV: Secretary of the Navy Instructions (placeholder - awaiting RSS feed)
• JTR: Joint Travel Regulations updates from travel.dod.mil

Core Functionality

• Live RSS Feeds: Fetches latest messages from official sources
• Advanced Search: Search by message ID, subject, or keywords
• Date Filtering: Quick filter buttons (Today, This Week, 2 Weeks, This Month, 60/90/180 Days, All)
• Offline Support: Works offline with cached data via service worker
• Dark Theme: Toggle between light and dark modes with persistence

User Experience

• Modern, responsive design
• Mobile-friendly interface with optimized button layouts
• Real-time search and filtering
• Clear visual hierarchy for messages
• Direct links to source documents
• Installable as a Progressive Web App (PWA)

Technical Details

Architecture

• Frontend-only: Pure HTML/CSS/JavaScript (no backend required)
• CORS Handling: Automatic fallback through multiple CORS proxies
• Data Storage: LocalStorage for caching and offline support
• RSS Parsing: DOM Parser for XML processing
• PWA: Service worker for offline functionality and fast repeat loads

CORS Proxy Fallbacks

The app automatically tries multiple CORS proxies in order:

1. Direct fetch (if CORS is enabled)
2. corsproxy.io
3. allorigins.win
4. cors-anywhere.herokuapp.com
5. codetabs.com

Each proxy has a 15-second timeout before trying the next one.

Performance

• Proxy preference caching for faster loads
• Service worker caching for offline access
• Optimized bundle with Vite

Usage

Basic Usage

1. Open the app in a modern web browser
2. Select a message type tab (MARADMIN, NAVADMIN, JTR, etc.)
3. Use the search box to find specific messages
4. Select a date range with the filter buttons
5. Click "Refresh" to fetch the latest messages

Search Tips

• Search by message ID: 123/24
• Search by keywords: promotion, travel, etc.
• Search is case-insensitive across ID, subject, and description

Installing as PWA

• Mobile: Tap "Add to Home Screen" in browser menu
• Desktop: Click install icon in address bar (Chrome/Edge)

Data Sources

Type	Source
MARADMIN	Marines.mil RSS Feed
NAVADMIN	MyNavyHR RSS Feed
JTR	travel.dod.mil RSS Feed
ALNAV	Pending RSS access
SECNAV	Pending RSS access

Development

Prerequisites

• Node.js 18+
• npm

Setup

npm install

Development Server

npm run dev

Build for Production

npm run build

Preview Production Build

npm run preview

Files

• index.html - Main HTML structure
• app.js - JavaScript application logic
• style.css - Styles and themes
• manifest.json - PWA manifest
• service-worker.js - Offline caching
• lib/ - Static data files for placeholder feeds

Browser Support

• Chrome/Edge (recommended)
• Firefox
• Safari
• Any modern browser with ES6+ support

Credits

Inspired by navadmin-scanner by mpyne-navy.

License

This is an unofficial tool not affiliated with the United States Marine Corps, United States Navy, or Department of Defense.